x86/resctrl: Free the ctrlval arrays when domain_setup_mon_state() fails

domain_add_cpu() is called whenever a CPU is brought online. The
earlier call to domain_setup_ctrlval() allocates the control value
arrays.

If domain_setup_mon_state() fails, the control value arrays are not
freed.

Add the missing kfree() calls.

Fixes: 1bd2a63b4f0de ("x86/intel_rdt/mba_sc: Add initialization support")
Fixes: edf6fa1c4a951 ("x86/intel_rdt/cqm: Add RMID (Resource monitoring ID) management")
Signed-off-by: James Morse <[e-mail]>
Signed-off-by: Borislav Petkov <[e-mail]>
Acked-by: Reinette Chatre <[e-mail]>
Cc: <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

arch/x86/kernel/cpu/resctrl/core.c

···
 	}
 
 	if (r->mon_capable && domain_setup_mon_state(r, d)) {
+		kfree(hw_dom->ctrl_val);
+		kfree(hw_dom->mbps_val);
 		kfree(d);
 		return;
 	}